A Novel PVC Membrane Sensor for Selective Determination of Cerium(III) Ions

A PVC membrane of azomethine of piperonylidine-4-[2.2]paracyclophanylamine reveals a Nernstian potentiometric response (with slope of 19.3 ± 0.3 mV/decade) for Ce(III) over a wide concentration range (10 −1 −2.5 × 10 −5  mol L −1 ). The potential of this electrode is independent of pH in the range o...

Full description

Saved in:
Bibliographic Details
Published in:Analytical letters 2003-01, Vol.36 (12), p.2585-2596
Main Author: Abdel Gaber, Ahmed A.
Format: Article
Language:English
Subjects:
Analytical chemistry
Cerium sensor
Chemistry
Exact sciences and technology
General, instrumentation
Ion-selective electrode
Potentiometric titrations
PVC membrane
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A PVC membrane of azomethine of piperonylidine-4-[2.2]paracyclophanylamine reveals a Nernstian potentiometric response (with slope of 19.3 ± 0.3 mV/decade) for Ce(III) over a wide concentration range (10 −1 −2.5 × 10 −5  mol L −1 ). The potential of this electrode is independent of pH in the range of 4.5-8.0. It has a fast response time of 30 s and can be used for a period of two months with good reproducibility. The detection limit of this membrane electrode is 1.2 × 10 −5  mol L −1 . The nature of the azomethine compound and its cerium(III) complex is examined using Fourier-transform infrared analysis, elemental analysis, and X-ray fluorescence techniques. This sensor exhibits a very good selectivities for Ce(III) over a wide variety of metal ions. The proposed sensor has been used as an indicator electrode in the potentiometric titration of carbonate and oxalate ions and in determination of acetyl salicylate content in some drugs.
ISSN:0003-2719
1532-236X
DOI:10.1081/AL-120024634